I replaced my starter. Removed two connectors on the oil pan to allow the removal. Disconnected the battery prior to the task for two days. When I completed the replacement the vehicle started fine. I didn’t drive it but let it run for 20 minutes. Shut down the car and tried to start it and it failed. I replaced the battery since it was the original 11 year old battery. Car started fine now but stack in limp mode. Could one of the two connectors have anything to do with this like bad connection?